Fix #1574. Fix #1578. Bug where deprecated functions were used in Python 3.9 for drawing generation.

src/blenderbim/blenderbim/bim/module/drawing/svgwriter.py

@@ -28,7 +28,7 @@ class External(svgwrite.container.Group):
         # Remove namespace
         ns = u"{http://www.w3.org/2000/svg}"
         nsl = len(ns)
-        for elem in self.xml.getiterator():
+        for elem in self.xml.iter():
             if elem.tag.startswith(ns):
                 elem.tag = elem.tag[nsl:]
 
@@ -85,19 +85,19 @@ class SvgWriter:
     def add_markers(self):
         tree = ET.parse(os.path.join(self.data_dir, "templates", "markers.svg"))
         root = tree.getroot()
-        for child in root.getchildren():
+        for child in root:
             self.svg.defs.add(External(child))
 
     def add_symbols(self):
         tree = ET.parse(os.path.join(self.data_dir, "templates", "symbols.svg"))
         root = tree.getroot()
-        for child in root.getchildren():
+        for child in root:
             self.svg.defs.add(External(child))
 
     def add_patterns(self):
         tree = ET.parse(os.path.join(self.data_dir, "templates", "patterns.svg"))
         root = tree.getroot()
-        for child in root.getchildren():
+        for child in root:
             self.svg.defs.add(External(child))
 
     def draw_background_image(self):

src/blenderbim/blenderbim/bim/operator.py

@@ -5,9 +5,6 @@ import json
 import logging
 import webbrowser
 import ifcopenshell
-
-# Deleting the below drawing import breaks svgwrite's ElementTree appending because ... magic?
-import blenderbim.bim.module.drawing
 from . import export_ifc
 from . import import_ifc
 from . import schema

src/ifcopenshell-python/ifcopenshell/api/geometry/add_representation.py

@@ -204,12 +204,12 @@ class Usecase:
     def create_variable_representation(self):
         if isinstance(self.settings["geometry"], bpy.types.Curve):
             return self.create_curve3d_representation()
+        elif isinstance(self.settings["geometry"], bpy.types.Camera):
+            return self.create_camera_block_representation()
         elif not len(self.settings["geometry"].polygons):
             return self.create_curve3d_representation()
         elif self.settings["is_point_cloud"]:
             return self.create_point_cloud_representation()
-        elif isinstance(self.settings["geometry"], bpy.types.Camera):
-            return self.create_camera_block_representation()
         elif self.settings["ifc_representation_class"] == "IfcExtrudedAreaSolid/IfcRectangleProfileDef":
             return self.create_rectangle_extrusion_representation()
         elif self.settings["ifc_representation_class"] == "IfcExtrudedAreaSolid/IfcCircleProfileDef":